Widthing machine for planks and laths



June 29 1926. I .7 "1,590,881

J. BROUWER v WIDTHING MACHINE FOR PLANKS AND LATHS Filed Dec. 16, 1924 Patented June 29, 1 926.

UNITED STATES PATE T O FI JACOBUS BROUWER, or ROTTERDAM, vnrnnnnniins, ASSIGNOR 'tro NAAfinoozE VENNOOTSGHAP ARNOLD I. v n DEN BERGHS EMBALLAGE FABRIEKEN, on ROTTEIR- DAM, NETHERLANDS, ADUTCH COMPANY.

win'rirms MAcH nEroR- PLANKS AnnLA'rHs. 1

Application filed December 16, 1924, Serial No. 756,297, and in Holland December 18,1923.

This invention has for its object a widthing machine for planks and laths andwhich is specially adapted for cooperating with a sawing machine for cutting wood beams or deals into-planks. Ifdesired, the novel machine can be combined with the sawing machine to form a unit'therewith, for instance,

by mounting both the widthing machine and 1 the sawing machine on a common'base.

The inventionwill be set forth hereinafter with reference to the following description of the embodiment shown, by way of example only, on the annexed drawing.

Fig. 1 of the drawing is a vertical, longitudinal section of the widthing machine and Figs. 2 and 3 are cross sections along the lines II-II and IIIIII in Fig. 1, respec-' tively. 1

From the wood beam or other suitable piece of timber 4: a plank 5 hasbeenfsplit in the sawing machine 6. The plank-is laterally divertedfrom the beam in the usual manner by means of a division or fence 7 andis further guided-by an additional fence composed of two parts,the one of which, designated by 8, is rigidly secured to the framing, whereas the. otherpart, 9, is secured to a slide 10 adapte'dfor vertical adjustment. Slide 10 is provided with a bear ing for the spindle of a revolving cutter 11 and it further serves as a support both for spring loaded pressure rollers 12, 13 engaging the topedge of plank 5 and for a spring loaded horizontal pressure roller, which maintains the plank and the part9 of the fence'8, 9 in contact. The downward pres sure exerted by these rollers can be adjusted in the usual manner by means of screws. The slide 10 is mounted in abrac'ket 15 bolted to the table 16," to which is also secured the fence part 8, a screwspind'le 17 serving to adjust the said slide in vertical direction.v The revolving cutter 1] is driven b a pulley 18. It will be understood, that the parts associated with slide 10 should be adjusted in accordance both with the width of the'plank coming from the sawing machine and with the thickness of the cutting to be taken off by the cutter operating on the top edge of the plank. 7

Underneath the table16, which will here inafter be referred to as the guideway for the body portion of the wood beam, is a bracket 19 for a second slide 21, which is vertically adjustable by means of a screw spindle 20. The 'slide21 is provided with a I counter-pressure rollers 24, which are adjustable, by screws 25, in a vertical direction 7 relative to the slide, but which are notspring loaded. Bolted to the guideway 16 for the body portion of the beam is a bracket 26 for a spring blade 27, which maintains thelower portion of the plank in contact with the fixed fence 8. V

The counter-pressure rollers 24 should be cutter,- in accordance with the desired depth of cut. I

The operation of the machine will be read- I 'ily understood from the foregoing. description. -Thecomparatively flexible plank is pressed against the fence 8, 9 near the points where it 1s operated upon by the revolving cutters, said cutters acting to ensure a uniform width of the plank which, duringthis operation, is kept down by the pressure rollers' 12 and 13; The beam 4' continues its travelover' guide rollers '28 without, howthe uniform fe'ed' mot-ion ofthe flexible plank between its rollers and the fence is not affected by any warp or twist of the beam and the plank is free to divert from the path prescribed to it by the body portion of the beam. Owing to this independent control ofthe motionof the plank, a uniform width throughout the: length-ofeven seriously warped or twisted planks can be ensured with a minimum of cutting being taken off. This is a great advantage in the manufacture ofboards forboxes because, while long bends in the plank are hardly noticeable in plank, it is essential to cut the adjusted in accordance with the diameter of the cutter 22 and further together with said ever, being pressed down. 7 Consequently,

the relatively short boards cut off from the wood as ecoor aifixed planingiron could be provided I for planing the plank on the side away fromthe support (fence -8, 9). The first plank cut from the beam has, as a rule,anunsightly outer face, so that. for certain purposes,

for instance, in the manufacture of boxes,

r it is necessary for said face to be wrought in a separate machine, whereas the smoothly cut faces; need not be p-laned again. With the novel machine, said planing can be done while the plank comes from the sawing man -i. a l a V If desired, the novel machine can be provided with an auxiliary feed roller to relieve port with known means, i. c.- by suction.

the feed roller of the sawing machine and to prevent the plank fron'i' collapsing;

Another and still n' orc important feature of the new method of widthing the plank while it comes" from the sawingmachine is,; that in the manufacture of boxes and the like one operation is saved. 'Up tillnowa number of small boards cut troin the planks are assembled to form apacketand are passed betweenv two saws} which cut them tot-he desired width. With the new inachine, this stage in the manufacture is combined withthe cutting}; of the beam into planks, whereby a saving" in floor space, capital expenditure, wages and transport is realized and the waste isnot,,as'ifs the case) with a ripping saw, in the form of. small it slats or laths which, as: is known, are difiicult tofi get; rid of. The-short; cuttings producedzby the new machine-are easy to trans Another advantage of the present invention is, that the dangerous r pping saw can al together be done away with By widthing of the plank are alsof-tobeunderstood operations, such. as moulding,

groovingand tongueing, which can b'carried-out, with minimum of expe1ise, simul tane0usly, with the splitting of the plank from the beam. I

Although by the presence of two opposite cutter block spindles theno'vel machine has acertainresemblance with, ordinary: threeor foursided p'laning'machines, adistinct diflerence from; the 'prior' art isthe-pro' visionao-f-ran individual guideway, near one side of the special fence, for the bodyper} tionot the-woo'dbeam and the fact, thatthe-other side-or" the 'fenceser-veS; a support for the plank dnring the time the edges,- of the plank are operatednponi V Even whenthe pressure means and the critter blocks shown on the drawing-are replaced by, other, or otherwise formed e-le ments s'o that the general arrangement of the machine is more like tha' t or ordinary planing machines-and the-plank is supported with itssid'eon a horizontally disposed di-y vision or fence a characteristic-feature?of the novel machine is the'presence oftheextra guideway or path atthe other side of said support. When the side R ofthe plank.- is horizontal, the guideway torthe body p ortionof the wood beam is,aas-will be under sto0d, not at right angles to the fence 8; 9,

but in parallel relationtherewith.

For sawing thin planks it is preferred"- 7 deals, etc, respectively.

to use a conical circular saw with non-set teetlnso that the width of cut is a minimum plank and of the fact; thatthe machineEis devised for work pieces of diii ereiit widths, the coinptositionot'; the fence of a fitted partan'diof an adjustable part is: another value, 7 able feature of the invention. Said support could, howetei'g-be an integralpiece, not op erativelycoupledwithotherelementsev The arrangement, whereby the elements for keeping the plank downand those for cutting o'ne;edge thereof can be adjusted simiultaneouslyis also an important feature of the invention, because it allows, of quick 7 ly adapting the machine for another width of the plank to be cut. v

For discriminatinga machine accordingto this invention it suflices to make su'rewheth eij the machine is provided, in cpnibination with; normal parts-"for woodeworking machine otthis character,v with spindles obviously a destined forfcarrying. cutter; blocks, because such machines are often sold without cutter blocks.-

It is evident that the exacticonstructionof it the sawing machine for splittingthe plank from the beam is to-a certain ejXt'entimma; terial as fares-the invention is concerned, but the combination of the novel machine with asawing machine of any suitabletype isof importance,

,lVhereveiflj this specification 7 planks andbeams; it'= also "applies:toboard s,i

lathe, strips, etc, and to logs, broad timbers,

What I claim is I r 1; A". smoothingmachinefor 1 planinggnill ingor boring the narrow edges-of a thin boa-rdasitpasses witha main piece of tim-" ber from a sawing 'machine, including. a frame .fdriningza gnideway for the" inain piece of timber, cutter and pressure tools mounted on: the frame, andafipair ofguiding= elements mounted on a the frame; and-positioned-between the; main piece of timber andthe thin board which-liasbeen out therefrom for coactingwith-cuttjer and pressure tools,;st1bstantiallyas and for the; purposes:

'set forth;

2, A. machinein "accordance with-chim- 1 wherein-the guidmg elements are-positioned so as'to contact with the outer parts of the width surface of the thin board.

A machine in accordance with claim 1, wherein one of the guiding elements is stationary and the other is vertically adjustable with respect thereto.

l. A machine in accordance with claim 1,

wherein certain of the cutter and pressure tools and one of the guiding elements are stationary, and the remaining element and cut ter and pressure tools are adjustable vertically with respect thereto;

5. A machine in accordance with claim 1, wherein the two guiding elements are displaced relatively to each other in the longitudinal direction of the board, and means for adjustably mounting one of the elements relatively to the other in a Vertical direction so that the said guiding elements can pass each other when guiding relatively narrow boards. I

6. A smoothing machine for planing, milling or boring the narrow edges of a thin board as it passes from a sawing machine with the main piece of timber fromwhich it is being out including in combination, a frame forming a guideway for the timber and the board, cutter and pressure tools mounted on the "frame for engaging one of the edges of I the board to the cutter and pressure tools adjustably' mounted relative to the frame ment, and said guiding elements being some-' what relatively displaced in the longitudinal direction of the board and provided with adjacent beveled edges to permit of the guiding of narrow boards, substantially as and for the purposes set forth.

In testimonywhereof I afiix my signature.

JAGOBUS BROUWER. 

